Biology High School

Why is the nucleus considered the command center of the cell?

Answers

Answer 1

Answer:

Explanation:

Answer 2

it’s A but it has to be 20 characters long

Related Questions

What event changes an atom into an ion?

Answers

Answer:the gain or loss of one or more electrons (B)

Explanation:

Nose color is an inherited trait in dogs. Two puppies from the same set of parents have different color noses. One puppy has a pink nose and one puppy has a black nose. How can puppies from the same set of parents have different color noses?
A.
The pink-nosed puppy and the black nosed puppy must not actually be related.

B.
The pink-nosed puppy and the black nosed puppy inherited different combinations of the genes for nose color from their parents.

C.
The pink-nosed puppy has a different number of chromosomes than the black nosed puppy.

D.
The pink nosed puppy and the black nosed puppy have different chromosomes for the two nose colors.

Answers

Answer: B

Explanation:

The pink-nosed puppy and the black nosed puppy inherited different combinations of the genes for nose color from their parents. So, the correct option is (B).

What are Genes?

A gene is the basic physical and functional unit of heredity which are made up of DNA. Every person receives two copies of each gene which is inherited from each parent.

Most genes are the same in all people but there are small number of genes which are slightly different between people. Genes are made of DNA, so each chromosome contains many genes. Genes carry the information that determines traits and characteristics or features that are passed on to other organisms or inherited from parents.

Each cell in the human body contains about 25,000 to 35,000 genes.

Thus, the pink-nosed puppy and the black nosed puppy inherited different combinations of the genes for nose color from their parents. So, the correct option is (B).

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19.Compared with unpolluted water, the water in a lake polluted by sewage will have
A. fewer microorganisms
C. more fish
B. more oxygen
D. more nitrogen compounds

Answers

Answer:

more nitrogen compounds

Explanation:

when water is polluted by sewage many microorganisms is present so we can deduct the 1st ans.

as water is polluted the environment is not suitable so living organisms so unpolluted water has more fish than polluted.

there cant be more oxygen in a place where it s polluted coz plants which grow under water wont grow as it is polluted

more nitrogen compounds is the answer because nitrogen compounds are made due to the reactions in polluted water.

hope this helps,

A is the correct answer,

Artificial selection has given us * A. The many species of wild cats B. Breeds of domesticated dogs C. Various human societies D. The many rainforest species

Answers

Answer:

b. breeds 0f domesticated dogs

Explanation:

I think its b.

Answer:

c. Breeds of domesticated dogs

what would happen to producer if there was no frogs? answer ASAP!!??

Answers

Answer:

the producer that eats frogs would die out

Can someone help me??

Answers

Answer:

i would try B

Explanation:

sorry if im wrong

Select the correct answer.
Kelvin's cow is showing signs of poor health. The cow is staying away from the herd and is not alert in its environment. The veterinarian believes that the cow is affected by
some type of infection. He also states that the lack of white blood cells in the cow is making it less resistant to the infection. Which system of Kelvin's cow is not functioning
properly?
А. muscular system
B. endocrine system
C. nervous system
D. circulatory system

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Answer:

Circulatory system.....

Which statement correctly describes a chemical reaction?
Reactants come out of a reaction.
Energy is alvays released.
Bonds between atoms break and reform.
O Products go into a reaction.

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Answer:

reactants come out of a reaction

*
1. The_regulates what goes in and out of the cell.
cytoplasm
ribosomes
cell membrane
nucleus

Answers

Answer:

cell membrane

Explanation:

it controls what comes in an out of the cell if its a plant cell you would have the ell wall as well

During gene expression, some of the DNA is copied and transcribed into another form. This smaller segment is made of(1 point)

RNA.

DNA.

chromosomes.

genes.

Answers

Answer:

DNA is copied and transcribed into another form. This smaller segment is made of genes.

Explanation:

Cell growth, replication, and cell repair are controlled by genetic material found within DNA molecules. These deoxyribonucleic acids' long-chain helical macromolecules are assembled from complex sequences called nucleotides; strong covalent bonds attach these four monomers (adenine, cytosine, guanine, thymine).

Coding regions of DNA are called genes- they contain specific instructions for the cell. Genes can include multiple nucleotides and even several chromosomes. Gene expression typically includes transcription into RNA, and translation into amino acids/ proteins.

A mother with a blood type of A has a son with
a blood type of B. Which of the following are
possible? Select all that apply.

Answers

Answer:

b blood

Explanation:

Which is a correct interpretation of the cladogram shown below?

Amoeba Sponge Earthworm
Trout

Lizard
Koala
Dog
Placental
Hal
Limbs
Jows
Segmented Body
Multicellular
Unicellular

A.Trout do not have segmented bodies
B. Amoeba are multicellular
C. Trout and Koalas are in the same class
D. Koalas evolved after trout

Answers

Answer:

Koalas evolved after trout.

Explanation:

A cladogram is the diagrammatical representation of the relationship between the organisms. From the cladogram, it can be said that Koalas evolved after trout. Thus, option D is correct.

What is a cladogram?

A cladogram is used to show the relation between the different species through branching. It tells about the sequence in which the characteristics were derived.

From the cladogram, it can be seen that trouts developed the jaws, and amoeba are unicellular organisms. However, Trouts and Koalas do not share the same class but Koalas evolved after trout in the geological timeline of evolution.

Therefore, the Koalas evolved after trout.

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how does the methodology of science help humans overcome their biases

Answers

Answer:

Explanation:

NG
Poe
Open with
Date
Chapter 21 Cell Structure and Function
1
18. What is the difference between rough endoplasmic reticulum (ER) and smooth endoplasmic reticulum (ER)?
1. Rough ER has lysosomes covering the organelle while smooth ER does not
b. Rough ER has ribosomes covering the organelle while smooth ER does not
C. Smooth ER releases energy while rough ER absorbs energy
d. Rough ER is found on the inside of the cell while smooth ER is found on the outside of the cell.

Answers

C smooth er real ease energy

Impacts of climate change (long answers please)

Answers

Increased heat, drought and insect outbreaks, all linked to climate change, have increased wildfires. Declining water supplies, reduced agricultural yields, health impacts in cities due to heat, and flooding and erosion in coastal areas are additional concerns.

One example of an object or substance the dose not have the property of color

Answers

Maybe Water, it’s blue on the outside but in the inside it’s clear. The better answer is what color is the air

Carbon-12 and Carbon-14 are isotopes; it means that

they have no protons

they have a different number of neutrons

they have a different number of electrons

they have the same atomic mass

Answers

A :-) Isotopes are forms of the same element with equal numbers of protons but different numbers of neutrons. For example, both carbon-12 and carbon-14 have 6 protons. But carbon-12 has 6 neutrons while carbon-14 has 8 neutrons. By definition, carbon-12, carbon-13 and carbon-14 are all isotopes of the carbon.

Distinguish between:
Bat and Dove

Answers

Answer and Explanation:

Bats are mammals of the order Chiroptera. With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more manoeuvrable than birds, flying with their very long spread-out digits covered with a thin membrane or patagium.

Their wings skeleton have the shape of finger/hands like a human.

Doves are the only family in the order Columbiformes. These are stout-bodied birds with short necks, and short slender bills that in some species feature fleshy ceres. They primarily feed on seeds, fruits, and plants.

#teamtrees #WAP (Water And Plant)

Answer:

Doves have beaks and no teeth, whereas bats have jaw bones with sharp teeth. Although they both fly, Dove and bats feature different structures that allow them to take flight. Doves have rigid, feathered wings that they flap completely in order to fly.

What type of wave passes through the spring of a frog toy

Answers

Answer:

A sound wave, I'd assume.

Explanation:

6.L.14.4 Which is true of only animal cells?
A. Their cytoplasm contains organelles.
B. They do not have a rigid outermost layer.
C. The process of obtaining energy requires sugar.
D. They have organelles that are surrounded by membranes.

Answers

Only animal cells have the process of obtaining energy through sugar. Plants on the other hand undergo photosynthesis, which uses sunlight instead of sugar.

Hope this helps! Please correct me if I'm wrong :)

Answer:

B. They do not have a rigid outermost layer.

Explanation:

Several organisms, including bacteria and eukaryotes are heterotrophs- this means that they obtain energy through breaking down organic molecules like sugar, and amino acids made by producers.

Animal cells are eukaryotic; all eukayoted may be single-celled, or multicellular, and contain a nucleus containing genetic material along with membrane-bound organelles in their cytoplasms. Animal cells do not contain rigid cell walls, unlike other eukaryotic cell types like plant cells.

What is the Stiffer Mantle ending depth

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Answer:

The Stiffer Mantle is 930 miles into the Earth. It is 123,000 miles deep.

Explanation:

True / False: Earth's atmosphere is made primarily of oxygen gas.

Answers

False.

The air in Earth's atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

What system do we use to bind periods, eras, etc., of time together?

Answers

Answer:

The Geological Time Scale

Explanation:

The Geological Time Scale is the framework in which the history of the Earth is inscribed. It combines a numerical scale that uses the million years as a unit (chronometric scale) and a scale that is expressed in relative time units (chronostratigraphic scale).

The chronometric scale is based on the measurement of certain physical properties of rocks, generally the relationship between the content of stable and unstable isotopes of the same element.

Which evidence did Wegener use to develop the theory of continental drift?

Answers

There’s the answer for you! It was to much to type out! Hopefully you can read it...

Answer: Mountains in North America appear to be part of the same chain of mountains as those in Northern Europe.

Explanation:

I took the test on K12

your welcome

How does increasing carbon dioxide affect photosynthesis?

Answers

Answer:

An increase in the carbon dioxide concentration increases the rate at which carbon is incorporated into carbohydrate in the light-independent reaction, and so the rate of photosynthesis generally increases until limited by another factor.

Studies have shown that increased concentrations of carbon dioxide increase photosynthesis, spurring plant growth. ... While rising carbon dioxide concentrations in the air can be beneficial for plants, it is also the chief culprit of climate change.

Who is and who is not recommended to receive a flu vaccine? Why do these recommendations exist?

P.S. If you are correct I will give brainiest.

Answers

Answer:

CDC recommends annual influenza vaccination for everyone 6 months and older with any licensed, age-appropriate flu vaccine (IIV, RIV4, or LAIV4) with no preference expressed for any one vaccine over another.

Explanation:

HOPE THIS IS CORRECT!

Cell division is completed when which step is finished? (SE 5A) Select one: a. interphase b. telophase c. mitosis d. cytokinesis

Answers

Answer: Cytokinesis

Explanation: I am taking this same test right now and got it correct.

Cell division is completed when cytokinesis, which is the final step of mitosis, referring to cytoplasmic division, is completed. So the correct option is D.

What is mitosis?

A kind of cell division known as mitosis occurs when a single cell (the mother) splits into two genetically identical daughter cells. Mitosis, when referring to the cell cycle, is the stage of cell division during which the DNA in the cell's nucleus is divided into two identical sets of chromosomes.

Mitosis is used in the vast majority of cell divisions that take place in your body. Mitosis fills an organism's body with cells during development and growth, and it substitutes old, tattered new cells over the course of an organism's existence. Mitotic divisions are a kind of reproduction for single-celled eukaryotes like yeast, resulting in the generation of new members of the population.

In each of these scenarios, ensuring that each daughter cell receives a flawless, complete set of chromosomes is the "objective" of mitosis. In general, cells with too few or too many chromosomes don't function effectively; they may die off or potentially spread cancer. Thus, during mitosis, cells don't just randomly split their DNA into two heaps for the two daughter cells. Instead, they divided up their duplicate chromosomes in a methodical order.

Therefore the correct option is D.

Answers

The answer is A. AAR CAT GGA

It’s A: AAT CAT GGA

7. CASE STUDY For Biosphere 2 to meet its goal, why was it necessary for it to replicate a
variety of climates?

Answers

Answer:

For Biosphere 2 to meet its goal, it was necessary to replicate a variety of climates. The original goal was to provide a successful model for human space colonies, and with this goal in mind, scientists and engineers built prototypes of several environments that can replicate the real-life climates (in order to see how the complex processes work). This provides a viable ecological system in outer space. In the model, there are different climates used to see how different factors of the Earth affect each other.

Explanation:

This answer was formed with help from Slader.

How do Hadley cells affect savannas climate

Answers

They do because they do

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His advisory has 24 students and each student sold 6 candy bars for $3 each. The class gets to keep 25% of all the money. How much money did Mr. Kotters class get to keep HELP IM ON A TIMER PLEASE ANSWER ASAPReread "The Emancipation Proclamation, excerpt":BY THE PRESIDENT OF THE UNITED STATES OF AMERICA. A PROCLAMATION.I, ABRAHAM LINCOLN, President of the United States of America, and Commander-in-Chief of the Army and Navy thereof, do hereby proclaim and declare that hereafter, as heretofore, the war will be prosecuted for the object of practically restoring the constitutional relation between the United States, and each of the States, and the people thereof, in which States that relation is, or may be, suspended or disturbed.That it is my purpose, upon the next meeting of Congress to again recommend the adoption of a practical measure tendering pecuniary aid to the free acceptance or rejection of all slave States, so called, the people whereof may not then be in rebellion against the United States and which States may then have voluntarily adopted, or thereafter may voluntarily adopt, immediate or gradual abolishment of slavery within their respective limits; and that the effort to colonize persons of African descent, with their consent, upon this continent, or elsewhere, with the previously obtained consent of the Governments existing there, will be continued.That on the first day of January in the year of our Lord, one thousand eight hundred and sixty-three, all persons held as slaves within any State, or designated part of a State, the people whereof shall then be in rebellion against the United States shall be then, thenceforward, and forever free; and the executive government of the United States, including the military and naval authority thereof, will recognize and maintain the freedom of such persons, and will do no act or acts to repress such persons, or any of them, in any efforts they may make for their actual freedom.That the executive will, on the first day of January aforesaid, by proclamation, designate the States, and part of States, if any, in which the people thereof respectively, shall then be in rebellion against the United States; and the fact that any State, or the people thereof shall, on that day be, in good faith represented in the Congress of the United States, by members chosen thereto, at elections wherein a majority of the qualified voters of such State shall have participated, shall, in the absence of strong countervailing testimony, be deemed conclusive evidence that such State and the people thereof, are not then in rebellion against the United States.That attention is hereby called to an Act of Congress entitled "An Act to make an additional Article of War" approved March 13, 1862, and which act is in the words and figure following:"Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That hereafter the following shall be promulgated as an additional article of war for the government of the army of the United States, and shall be obeyed and observed as such:Article . 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